Dumb question about selecting with Polygonal Lasso Tool... 3

[src23]

I started recently to work with photoshop... and I have a lot of questions... but only one is pressing me now: when I'm using Polygonal Lasso Tool, and I make a wrong click, HOW ON EARTH CAN I RETURN TO PREVIOUS CLICK ? I mean how can I step back to the previous state of selection ?
It seems to be a very simple problem, but no one could help me so far. It's been very annoying when it took me 20 min to make a polygonal selection.... and when I was about to close it, I made a wrong click and it all went to hell!
Thank you in advance...

 

[viol8ion]

Hit backspace, unless you double-clicked and joined the polygon, in which case you are SOL, because backspace will selete the selection.

When in doubt, deny all terms and defnitions.

http://www.wuli.com

 

[barehug]

You really don't have to select all in one go(that's just looking for trouble) select an area and keep adding/ subtracting to/from it, and if it is going to take a long time to reproduce then save the selection every few mins or so.

Moe: It could have been a real ugly situation, but luckily I managed to shoot him in the spine.

 

[dimoj]

Or just use the Pen in path mode and convert it to a selection when finished.

Or use quick mask.

 

[src23]

Thank you all for the tips... you saved me a lot of time...